CN201581866U - Sand-controlling well washer - Google Patents
Sand-controlling well washer Download PDFInfo
- Publication number
- CN201581866U CN201581866U CN2010200010250U CN201020001025U CN201581866U CN 201581866 U CN201581866 U CN 201581866U CN 2010200010250 U CN2010200010250 U CN 2010200010250U CN 201020001025 U CN201020001025 U CN 201020001025U CN 201581866 U CN201581866 U CN 201581866U
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- China
- Prior art keywords
- sand
- piston body
- inlet opening
- rows
- sand control
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a sand-controlling well washer. The utility model mainly solves the problem that the prior hot-washing check valve cannot control sand and has poor sealing property. The well washer is characterized in that: water inlets (6) are a plurality of rows of round holes with the diameter of 3mm to 6mm, both the inner and the outer sides of the lower part of a piston body (4) are provided with grooves (8), and the partition wall between the two grooves (8) is provided with two rows of staggered closed holes (9). The sand-controlling well washer is characterized by sand control and good sealing property.
Description
Technical field:
The utility model relates under the screw bolt well of oil field heat and washes accessory, especially a kind of sand control well-washing device.
Background technology:
In recent years, the consumption of screw pump on the oil field constantly increases, but owing to the content of wax in the oil is more and more higher, wax deposit is on the borehole wall, sucker rod and pump, oil flow channel is diminished, and therefore screw-pump oil-extraction equipment system works decrease in efficiency must carry out hot-washing wax remover to screw pump oil production well.The heat of taking the at present mode of washing generally is on the pump housing top heat to be installed to wash ball-and-seat, but existing heat wash ball-and-seat can not sand control, often have sand grains and block the inlet opening, influence heat and wash, and after the normal phase use, encapsulant easily comes off, and causes sealing poor.
The utility model content:
Can not sand control in order to overcome existing hot clean-up well ball-and-seat, the problem of sealing difference, the utility model provides a kind of sand control well-washing device, this sand control well-washing device has can sand control, the characteristics of good airproof performance.
The technical solution of the utility model is: a kind of sand control well-washing device, comprise shell, piston body, and outer casing underpart has the inlet opening, described inlet opening is the circular hole of 3-6mm for the plurality of rows diameter, inside and outside both sides, described piston body bottom are all fluted, the closed hole that has two rows to stagger mutually on the next door between two grooves.
Described inlet opening is 5-7 row, and every row is 12.
The utlity model has following beneficial effect: owing to take such scheme, the inlet opening is the circular hole of 3-6mm for the plurality of rows diameter, compares with the inlet opening of existing ball-and-seat, and diameter reduces, and can also play the effect of sand control in water inlet; The piston body bottom is fluted, and the closed hole that staggers is mutually arranged on the next door between the groove, and when annotating fluid sealant in groove, fluid sealant fills up groove after arranging closed holes by two, and it is more firm to make glue next door both sides solidify, and can not come off better tightness.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is structural representations of piston body in the utility model;
1-top connection among the figure, 2-elastic body, 3-shell, 4-piston body, 5-sealing ring, 6-inlet opening, 7-lower contact, 8-groove, 9-closed hole.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Figure 1 and Figure 2, a kind of sand control well-washing device, comprise upper and lower joint (1,7), shell 3, piston body 4, shell 3 is threaded with upper and lower joint (1,7) respectively up and down, upper and lower joint (1,7) flexible successively from top to bottom body 2 and tapered piston body 4 between, tapered and lower contact 7 tops of piston body 4 inside cooperate.On the shell 3 of piston body 4 bottom correspondences inlet opening 6 is arranged, described inlet opening 6 is the circular hole of 3-6mm for the plurality of rows diameter, consider the diameter of this well-washing device, inlet opening 6 is made as 5-7 row, every row is 12 holes, compares with the inlet opening on the existing ball-and-seat, and quantity increases, diameter diminishes, therefore, in water inlet, also play the effect of sand control; Inside and outside both sides all fluted 8, described piston body 4 bottoms, the closed hole 9 that has two rows to stagger mutually on the next door between two grooves 8, filling with sealant in the groove 8, the piston body 4 and the contact surface of shell 3 and lower contact 7 are sealed, the processing of two row's closed holes 9 makes that the fluid sealant connection in the inside and outside groove 8 is solidified togather, and can not come off, therefore, better tightness.
This ball-and-seat was closed when screw pump normally moved, and when heat was washed, hot washing lotion entered the down-hole by the circular passage of well head between sleeve pipe and oil pipe, under the effect of pressure reduction, heat is washed passage and is opened, and enters ball-and-seat by inlet opening 6, enters the oil pipe inner chamber and returns out ground, realization heat is washed, finish the hot clean-up well circulation, thereby remove the collection wax on the tube inner wall, when well-flushing finishes, piston body 4 is closed heat and is washed passage under the effect of elastic body 2, recover the sealing of tubing string.This hot clean-up well ball-and-seat is compared with ball-and-seat in the past, can sand control, and encapsulant can not come off better tightness.
Claims (2)
1. sand control well-washing device, comprise shell (3), piston body (4), and inlet opening (6) is arranged at shell (3) bottom, it is characterized in that: described inlet opening (6) are the circular hole of 3-6mm for the plurality of rows diameter, inside and outside both sides all fluted (8), described piston body (4) bottom, the closed hole (9) that has two rows to stagger mutually on the next door between two grooves (8).
2. sand control well-washing device according to claim 1, described inlet opening (6) are 5-7 row, every row is 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200010250U CN201581866U (en) | 2010-01-18 | 2010-01-18 | Sand-controlling well washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200010250U CN201581866U (en) | 2010-01-18 | 2010-01-18 | Sand-controlling well washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201581866U true CN201581866U (en) | 2010-09-15 |
Family
ID=42723864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200010250U Expired - Fee Related CN201581866U (en) | 2010-01-18 | 2010-01-18 | Sand-controlling well washer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201581866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007025A1 (en) * | 2011-07-14 | 2013-01-17 | 四川宏华石油设备有限公司 | Valve |
-
2010
- 2010-01-18 CN CN2010200010250U patent/CN201581866U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007025A1 (en) * | 2011-07-14 | 2013-01-17 | 四川宏华石油设备有限公司 | Valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20120118 |